KA1H0265 Fairchild, KA1H0265 Datasheet

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KA1H0265

Manufacturer Part Number
KA1H0265
Description
Fairchild Power Switch(FPS)
Manufacturer
Fairchild
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
KA1H0265R
Manufacturer:
FAIRCHILD
Quantity:
12 500
Features
• Precision Fixed Operating Frequency
• KA1M0265R (70kHz) , KA1H0265R (100kHz)
• Pulse by Pulse Over Current Limiting
• Over Load Protection
• Over Voltage Protection (Min. 23V)
• Internal Thermal Shutdown Function
• Under Voltage Lockout
• Internal High Voltage Sense FET
• Auto Restart
Internal Block Diagram
©2003 Fairchild Semiconductor Corporation
KA1M0265R/KA1H0265R
Fairchild Power Switch(FPS)
#3 V
#4 FB
CC
5 A
7.5V
25V
32V
+
+
1mA
OVER VOLTAGE S/D
2.5R
1R
9V
Thermal S/D
+
OSC
Vref
5V
0.1V
L.E.B
Good
logic
S
R
Description
The Fairchild Power Switch(FPS) product family is specially
designed for an off line SMPS with minimal external
components. The Fairchild Power Switch(FPS) consist of
high voltage power SenseFET and current mode PWM
controller IC. PWM controller features integrated fixed
oscillator, under voltage lock out, leading edge blanking,
optimized gate turn-on/turn-off driver, thermal shut down
protection, over voltage protection, temperature compensated
precision current sources for loop compensation and fault
protection circuit. compared to discrete MOSFET and
controller or R
Power Switch(FPS) can reduce total component count,
design size, weight and at the same time increase &
efficiency, productivity, and system reliability. It has a basic
platform well suited for cost effective design in either a
flyback converter or a forward converter.
1. GND 2. DRAIN 3. V
Q
Power on reset
TO-220F-4L
Internal
bias
1
S
R
Q
CC
switching converter solution, a Fairchild
CC
4. FB
SFET
www.fairchildsemi.com
#2 DRAIN
#1 GND
Rev.1.0.2

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KA1H0265 Summary of contents

Page 1

... KA1M0265R/KA1H0265R Fairchild Power Switch(FPS) Features • Precision Fixed Operating Frequency • KA1M0265R (70kHz) , KA1H0265R (100kHz) • Pulse by Pulse Over Current Limiting • Over Load Protection • Over Voltage Protection (Min. 23V) • Internal Thermal Shutdown Function • Under Voltage Lockout • Internal High Voltage Sense FET • ...

Page 2

... KA1M0265R/KA1H0265R Absolute Maximum Ratings Parameter (1) Maximum Drain Voltage Drain-Gate Voltage (R = Gate-Source (GND) Voltage (2) Drain Current Pulsed Single Pulsed Avalanche Energy Continuous Drain Current (T = Continuous Drain Current (T =100 C) C Maximum Supply Voltage Input Voltage Range Total Power Dissipation Operating Ambient Temperature ...

Page 3

... Coss f=1MHz Crss t V =0.5BV d(on) DD (MOSFET switching tr time are essentially t d(off) independent of tf operating temperature =10V =0.5BV DS switching time are Qgs essentially independent of Qgd operating temperature) 2% KA1M0265R/KA1H0265R Min. Typ. Max. Unit =50 A 650 - =125 C C =1.0A - 5.0 D =1.0A 1.5 2 550 =25V ...

Page 4

... These parameters, although guaranteed, are tested in EDS (wafer test) process 4 (Continued) Symbol Condition V - START V After turn on STOP KA1M0265R F OSC KA1H0265R ( - KA1M0265R Dmax KA1H0265R I Ta= Idelay Ta= Vfb V Vref Ta=25 C Vref Max. inductor current OVER ( ...

Page 5

... Ifb I FB 0.95 0.9 0.85 0.8 75 100 125 150 ] C I Ipeak over 75 100 125 150 ] C V Vstart th(H) 75 100 125 150 ] C KA1M0265R/KA1H0265R Fig.2 Feedback Source Current 1 - 100 Temperature [ ] C Figure 2. Feedback Source Current Fig.4 Max Inductor Current 1.1 1.05 1 0.95 0.9 0.85 0.8 - 100 125 150 Temperature [ ...

Page 6

... KA1M0265R/KA1H0265R Typical Performance Characteristics (These characteristic graphs are normalized at Ta=25 C) Fig.7 Stop Threshold Voltage 1.15 1.1 1.05 V Vstop th(L) 1 0.95 0.9 0.85 - Temperature [ Figure 7. Stop Threshold Voltage Fig.9 Vcc Zener Voltage 1.2 1.15 1.1 1. 0.95 0.9 0.85 0.8 - Temperature [ Figure 9. V Zener Voltage CC Fig.11 Shutdown Delay Current 1.2 1.15 1.1 1.05 Idelay 1 0.95 0.9 0.85 0.8 - ...

Page 7

... Typical Performance Characteristics (These characteristic groups are normalized at Ta=25 C) Fig.14 Drain Source Turn-on Resistance 2 Rdson 1 0 Temperature [ Figure 13. Static Drain-Source on Resistance (Continued) 75 100 125 150 ] C KA1M0265R/KA1H0265R 7 ...

Page 8

... KA1M0265R/KA1H0265R Package Dimensions 8 TO-220F-4L ...

Page 9

... Package Dimensions TO-220F-4L(Forming) (Continued) KA1M0265R/KA1H0265R 9 ...

Page 10

... Ordering Information Product Number KA1M0265R-TU KA1M0265R-YDTU TO-220F-4L(Forming) KA1H0265R-TU KA1H0265R-YDTU TO-220F-4L(Forming Non Forming Type YDTU : Forming Type DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN ...

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